from django.shortcuts import render
from django.core.cache import cache
from read_statistics.utils import get_seven_days_read_data, get_today_hot_data, get_yesterday_hot_data
from django.contrib.contenttypes.models import ContentType
from django.db.models import Sum,Q
from blog.models import Blog
from django.utils import timezone
import datetime
from django.shortcuts import render
from django.core.paginator import Paginator


def get_7_days_hot_blogs():
    today = timezone.now().date()
    date = today - datetime.timedelta(days=7)
    blogs = Blog.objects.filter(read_details__date__lt=today, read_details__date__gte=date).values('id',
                                                                                                   'title').annotate(
        read_num_sum=Sum('read_details__read_num')).order_by('-read_num_sum')
    return blogs[:7]


# 主页
def home(request):
    # 获取博客类型
    blog_content_type = ContentType.objects.get_for_model(Blog)

    dates, read_nums = get_seven_days_read_data(blog_content_type)

    ##获取7天热门博客缓存
    hot_blogs_for_7_days = cache.get('hot_blogs_for_7_days')
    if hot_blogs_for_7_days is None:
        hot_blogs_for_7_days = get_7_days_hot_blogs()
        cache.set('hot_blogs_for_7_days', hot_blogs_for_7_days, 3600)
        print('计算')
    else:
        print('use cache')

    context = {}
    context['dates'] = dates
    context['read_nums'] = read_nums
    context['today_hot_data'] = get_today_hot_data(blog_content_type)
    context['yesterday_hot_data'] = get_yesterday_hot_data(blog_content_type)
    context['hot_blogs_for_7_days'] = hot_blogs_for_7_days
    return render(request, "home.html", context)

def search(request):
    search_words = request.GET.get('wd','').strip()
    #分词 按空格
    condition = None
    for word in search_words.split(' '):
        if condition is None:
            condition = Q(title__icontains=word)
        else:
            condition = condition | Q(title__icontains=word)

    search_blogs=[]
    if condition is not None:
        # 搜索
        search_blogs=Blog.objects.filter(condition)






    paginator = Paginator(search_blogs, 10)  # 每each_page_blogs_number页分一页
    page_num = request.GET.get('page', 1)  # 获取页码参数（GET请求）
    page_of_blogs = paginator.get_page(page_num)

    context= {}
    context['search_words'] = search_words
    context['page_of_blogs'] = page_of_blogs
    context['search_blogs_count'] = search_blogs.count()
    return render(request,'search.html',context)